My 2000 blaster sputters in 5th and 6ths at full throttle

[NASTYBLASTY]

hi there
i bought my 2000 yamaha blaster about a year ago.. fmf exhaust, beadlock rims g force rear axle and other than that pretty much stock, i notice it putters and spits at full throttle in 5th and 6th and starting to do it in 4th. It doesnt really do it until 20 min into the ride and it gets pretty bad... other than that runs awesome has lots of compression etc...
I was thinking i need to rejet it bc i heard you should with the fmf and im pretty sure the guy i bought it off of didnt... would that be causing my issue? also what size should i go?
Was thinking at the same time getting vforce3 reeds do they make a big difference anything i should do before installing them?

 

[super noober]

hi there
i bought my 2000 yamaha blaster about a year ago.. fmf exhaust, beadlock rims g force rear axle and other than that pretty much stock, i notice it putters and spits at full throttle in 5th and 6th and starting to do it in 4th. It doesnt really do it until 20 min into the ride and it gets pretty bad... other than that runs awesome has lots of compression etc...
I was thinking i need to rejet it bc i heard you should with the fmf and im pretty sure the guy i bought it off of didnt... would that be causing my issue? also what size should i go?
Was thinking at the same time getting vforce3 reeds do they make a big difference anything i should do before installing them?

take the carb apart and see what jets you have, it would definately need to be jetted for the exhaust. also what does your plug look like? i bet its lean..

 

[NASTYBLASTY]

ya it is ... i will do... how do i tell whats in there? i bought a rebuild kit prob not gunna be there right thing eh?

 

[super noober]

ya it is ... i will do... how do i tell whats in there? i bought a rebuild kit prob not gunna be there right thing eh?

take the carb off and remove the bottom "bowl", once u do that you will see the main jet sticking out of the middle (its brass) i belive its a 6mm socket or wrench to take it out. it will have numbers on it, if its a stock carb 230 is the stock main size and if thats what u got in there i would get a few jets around the 260-270 range and see how it runs. look up the "plug chop" procedure using the search box and do that also to get your jetting perfect

 

[NASTYBLASTY]

ohhh thanx dude !!!!! u & blaster form have been a great help 2 my girlfriend & i we both have blasters !!!!! thanx again !!!!

 

[super noober]

ohhh thanx dude !!!!! u & blaster form have been a great help 2 my girlfriend & i we both have blasters !!!!! thanx again !!!!

no problem and stop back anytime I:I I:I

 

[jlsparky7]

 

[Racer51]

Yea at least a 260 if your gonna add VF3's to the mix. Yea it's no problem thats what were here for dude